<template>
    <view>
        <view class="goods-list">
            <view v-for="(goods,i) in goodsList" :key="i" @click="gotoDetail(goods)">
                <my-goods :goods = "goods"></my-goods>
            </view>
        </view>
    </view>
</template>

<script>
    export default {
        data() {
            return {
                // 请求参数对象
                queryObj:{
                    query: '',
                    cid: '',
                    pageNum: 1,
                    pageSize: 10
                },
                // 商品列表的数据
                goodsList: [],
                // 总数量，用来实现分页
                total:0,
                // 节流阀
                isloading:false
               
            };
        },
        onLoad(options){
            console.log(options);
            
            this.queryObj.query = options.query || ''
            this.queryObj.cid = options.cid || ''
            console.log(this.queryObj);
            
            this.getGoodsList()
        },
        methods:{
            async getGoodsList(cb){
                // 打开节流阀
                this.isloading = true
                const {data: res } = await uni.$http.get('/api/public/v1/goods/search',this.queryObj)
                // 关闭节流阀
                this.isloading = false
                // 只要数据请求完毕，就立即按需调用cb回调函数
                cb && cb()
                
                if(res.meta.status !== 200 ) return uni.$showMsg()
                // 为数据赋值,通过展开运算符的形式，进行新旧数据的拼接
                this.goodsList = [...this.goodsList , ...res.message.goods]
                this.total = res.message.total
            },
            gotoDetail(goods){
                uni.navigateTo({
                    url:'/subpkg/goods_detail/goods_detail?goods_id=' + goods.goods_id
                })
            }
        },
        // 触底事件
        onReachBottom(){
            if(this.queryObj.pageNum *this.queryObj.pageSize >= this.total) return uni.$showMsg('数据加载完毕！')
            
            if(this.isloading) return
            // 页码自增 +1
            this.queryObj.pageNum +=1
            // 重新获取列表数据
            this.getGoodsList()
        },
        // 下拉刷新事件
        onPullDownRefresh(){
            // 1. 重置关键数据
            this.queryObj.pageNum = 1
            this.total = 0
            this.isloading = false
            this.goodsList = []
            
            // 2. 重新发起请求
            this.getGoodsList(()=> uni.stopPullDownRefresh())
        }
    }
</script>

<style lang="scss">

</style>
